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Missing Integrity Check in Shelly TRV 20220811-152343/v2.1.8@5afc928c allows malicious users to create a backdoor by redirecting the device to an attacker-controlled machine which serves the manipulated firmware file. The device is updated with the manipulated firmware.

CVE-2023-42143 is a medium-severity vulnerability affecting Shelly TRV smart thermostatic radiator valves, specifically version 20220811-152343/v2.1.8@5afc928c. The core issue is a missing integrity check during the firmware update process. This flaw allows an attacker with network access and limited privileges (PR:L) to redirect the device to an attacker-controlled server that hosts a manipulated firmware image. Because the device does not verify the integrity of the firmware before applying it, the malicious firmware is installed, effectively creating a backdoor on the device. This backdoor could be used for persistent unauthorized access or further attacks within the network. The vulnerability is exploitable remotely over the network (AV:N) with low attack complexity (AC:L), but requires some user interaction (UI:R), such as triggering the update process or redirecting the device’s update request. The scope is changed (S:C), meaning the vulnerability affects resources beyond the initially vulnerable component. The impact includes limited confidentiality and integrity loss (C:L/I:L) but no impact on availability (A:N). No known exploits have been reported in the wild to date, and no official patches or vendor advisories are currently linked. The vulnerability is categorized under CWE-354 (Improper Integrity Check).

Detailed information about CVE-2023-42143: n/a in n/a affecting n/a n/a. Get real-time updates, technical details, and mitigation strategies.

CVE-2023-42143: n/a in n/a - Live Threat Intelligence - Threat Radar | OffSeq.com

CVE-2023-42143: n/a in n/a

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